The water heater is an amazingly reliable appliance and one you rely upon every day. It really has very few parts that can go wrong and most are easy to repair. Of course knowing the various water heater's components and their names are essential so reviewing the Anatomy of a Water Heater is a good starting point.
As of January 1, 2012 the law says you cannot manufacture or import into the United States any General Service Incandescent Lamp that is above 72 watts having a light output of 1490 - 2600 lumens and a minimum service life of 1,000 hours.
The water heater is an amazingly reliable appliance and one you rely upon every day. It really has very few parts that can go wrong and most are easy to repair. Of course knowing the various water heater's components and their names are essential so reviewing the 
